When a muscle is stimulated prior to full relaxation of a previous contraction and the second stimulus is added to the first contraction, this phenomenon is referred to as ________
A) summation B) twitch C) fatigue D) tetanus
Answer: A
Biology & Microbiology
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____ learning is also called ____ and occurs when an animal learns that two events are correlated
Fill in the blank with the appropriate word.
Biology & Microbiology
In a human male, how many total chromatids are present in cell number 4?
a. 2 b. 4 c. 23 d. 46 e. 92
Biology & Microbiology
The primer used for DNA replication
a. is a short strand of RNA added to the 3? end. b. is needed only once on a leading strand. c. remains on the DNA after replication. d. ensures that there will be a free 5? end to which nucleotides can be added. e. is added to only one of the two template strands.
Biology & Microbiology
Ribosomes are made up of which kind of nucleic acid?
A) mRNA B) tRNA C) rRNA D) DNA
Biology & Microbiology